This page is about the meanings of the acronym/abbreviation/shorthand NX in the Governmental field in general and in the NASA terminology in particular.

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Definition

NX, formerly known as NX Unigraphics or usually just U-G, is an advanced high-end CAD/CAM/CAE software package developed by Siemens PLM Software.
It is used, among other tasks, for:
Design
Engineering analysis.
Manufacturing finished design by using included machining modules.
NX is a direct competitor to Creo Elements/Pro and CATIA.